Talend Open Studio for Data Quality helps you to profile your data. The ergonomic interface allows you to define metrics (indicators) and collect statistics on your data in a few clicks. It comes with a set of regular expressions that helps you to identify bad data. You can create your own regular expressions and use them in data profiling analyses. A lot of options exist for each indicator, which change the behavior of the indicator so that it gives you more pertinent information. Data quality options on indicators alert you when your data quality is not what you expected.

Piggydb is a flexible and scalable knowledge building platform that supports a heuristic or bottom-up approach to discover new concepts or ideas based on your input. You can begin with using it as a flexible outliner, diary or notebook, and as your database grows, Piggydb helps you to shape or elaborate your own knowledge. Piggydb is a Web application provided as a self-contained package that contains a Web server and database engine.

Plone is a content management system
that is simple to set up, maintain, and modify. It
is designed to be a corporate-ready content
management system.
It is ideal as an intranet and extranet server, as a document/Web publishing system, and as a groupware tool for collaboration between separately located entities.
It aims to be a proper content management and publishing system, sharing the same qualities as Teamsite, Livelink, and Documentum.

Evergreen is an integrated library system originally developed by the Georgia PINES consortium for use as their automation system, and now includes contributions from around the world. It was designed from scratch for large-scale deployment in very large public library and state-wide consortium environments with tens of millions of records and hundreds of libraries, but can also scale down to the smallest of single-branch libraries.

DataCleaner is a data quality analysis tool that allows you to perform data profiling, validating, and minor ETL-like tasks. These activities help you administer and monitor your data quality in order to ensure that your data is useful and applicable to your business situation. It can be used for master data management (MDM) methodologies, data warehousing projects, statistical research, preparation for extract-transform-load activities, and more.

TWiki is a flexible, powerful, and simple Web based collaboration platform. It is suitable for dynamic intranets and knowledge bases, and for sharing and managing documents and collaborative projects. It resembles a normal Web site, but every page can be changed from a browser. It features automatic link generation, full text search, group authorization, Web forms, reporting, change notification, file attachments, revision control of pages and attachments, a modular templating system with skins, hierarchical navigation based on the topic parenting feature, and more. Plugins can be used to enhance the program and build groupware applications.

Wandora is a general purpose data extraction,
management, and publishing application based on
Topic Maps and Java. Wandora has a graphical user
interface, layered presentation of knowledge,
several data storage options, rich data
extraction, import and export capabilities, and an
embedded HTTP server that enables dynamic
publication of Topic Maps. Wandora is well suited
for rapid ontology construction and knowledge
mashups.

Nuxeo Platform provides a
framework and set of components to address document management and
collaboration needs, including metadata/taxonomies, versioning, lifecyle
management, workflow, relations, searching, reporting, transformation,
auditing, and retention. Its flexible extension system, based on OSGi,
allows developers to quickly configure and extend the platform by
creating new components. Its default Web user interface, based on the
JSF standard, uses AJAX to create a pleasant user experience. It can
also be accessed by a rich client interface through the use of Web
services, for instance using the Eclipse-based Nuxeo RCP rich client
platform.

mod_musicindex is an Apache module aimed at being
a C alternative to the Perl module Apache::MP3. It
allows nice displaying of directories containing
MP3, Ogg Vorbis, FLAC, or MP4/AAC files, including
sorting them on various fields,
streaming/downloading them, constructing
playlists, and searching. It also provides
features such as RSS and Podcast feeds, multiple
CSS support, and archive downloads.